Instead, part of every entrepreneurs job is to invent the future. I also call it “kicking your own ass”. Someone is out there looking to put you out of business. Someone is always out there who thinks they have a better idea than you have. A better solution than you have. A better or more efficient product than you have. If there is someone out there who can “kick your ass” by doing it better, its part of your job as the owner of the company to stay ahead of them and “kick your own ass” before someone else does.
via Why You Should NEVER Listen to Your Customers « blog maverick.